RT Journal Article SR Electronic(1) A1 Niemelä, S. I. A1 Tuovinen, O. H.YR 1972 T1 Acidophilic Thiobacilli in the River Sirppujoki JF Microbiology, VO 73 IS 1 SP 23 OP 28 DO https://doi.org/10.1099/00221287-73-1-23 PB Microbiology Society, SN 1465-2080, AB SUMMARY: Numbers of acidophilic thiosulphate-oxidizing and iron-oxidizing thiobacilli in the River Sirppujoki (S.W. Finland) were monitored through one annual cycle. A number of physical and chemical environmental variables of the river water were determined (temperature, discharge, pH values, titratable acidity, and concentrations of manganese, iron and sulphate). Thiobacilli in river water appeared mainly to have been washed in from the soil. Once in the river a slow loss of viability occurred, strongly influenced by the temperature. The methods for quantitative colony counts of acidophilic thiobacilli were deemed unsatisfactory., UL https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-73-1-23